| 鄂西—渝东地区热史恢复及烃源岩成烃史 |
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| 引用本文： | 卢庆治,马永生,郭彤楼,胡圣标.鄂西—渝东地区热史恢复及烃源岩成烃史[J].地质科学,2007,42(1):189-198. |
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| 作者姓名： | 卢庆治 马永生 郭彤楼 胡圣标 |
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| 作者单位： | 1. 中国科学院地质与地球物理研究所 北京 100029;2. 中国石油化工股份有限公司南方勘探开发分公司 昆明 650021 |
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| 基金项目： | 国家自然科学基金，中国石油化工集团公司资助项目 |
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| 摘 要： | 根据鄂西—渝东地区镜质体反射率数据进行的热史恢复结果表明:该区在晚二叠世初期达到最高古热流(可达68~78mW/m2,地表热流),从晚二叠世初到现今古热流持续降低,在侏罗纪末期古热流平均为~54mW/m2(地表热流);鄂西—渝东地区中生界与新生界之间不整合面的剥蚀量可达1700~4000m。成烃史研究表明:鄂西—渝东地区志留系烃源岩在晚志留世—早二叠世进入生油高峰,在早-中三叠世进入生气期,中侏罗世晚期进入过成熟干气阶段,快速生烃时期是在晚志留世、二叠纪—中三叠世及早-中侏罗世;而二叠系烃源岩在早三叠世进入生油门限,于中-晚三叠世达到生油高峰,在中-晚侏罗世进入生气期,晚侏罗世晚期进入过成熟,快速生烃时期是在早-中三叠世及侏罗纪。
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| 关 键 词： | 热史恢复 剥蚀量 成烃史 鄂西—渝东地区 |
| 文章编号： | 0563-5020（2007）01-0189-10 |
| 收稿时间： | 2006-02-28 |
| 修稿时间： | 2006-02-28 |
THERMAL HISTORY AND HYDROCARBON GENERATION HISTORY IN WESTERN HUBEI-EASTERN CHONGQING AREA |
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| Lu Qingzhi,Ma Yongsheng,Guo Tonglou,Hu Shengbiao.THERMAL HISTORY AND HYDROCARBON GENERATION HISTORY IN WESTERN HUBEI-EASTERN CHONGQING AREA[J].Chinese Journal of Geology,2007,42(1):189-198. |
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| Authors: | Lu Qingzhi Ma Yongsheng Guo Tonglou Hu Shengbiao |
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| Institution: | 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029;2. Southern Exploration and Development Division, China Petroleum & Chemical Corp., Kunming 650021 |
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| Abstract: | Thermal history reconstruction by using vitrinite reflectance data of western Hubei-eastern Chongqing area indicated that the maximum paleo-heat flow(68~78 mW/m~ 2 ) was reached in the early stage of Late Permian, and then decreased to present, and the paleo-heat flow at the end of Jurassic was averaged ~54 mW/m~ 2 . The erosion thickness on the Mesozoic and Cenozoic unconformity varied from 1 700 m to 4 000 m. The Silurian source rocks of western Hubei-eastern Chongqing area came into the oil-generating peak in Late Silurian-Early Permian, entered the gas-generation period in Early-Middle Triassic, and reached the overmature-dry gas phase in late Middle Jurassic. The hydrocarbon generation stage of the Silurian source rocks occurred during Late Silurian, Permian-Middle Triassic and Early-Middle Jurassic. The Permian source rocks came into the oil-generating peak in Middle-Late Triassic, entered the gas-generation period in Middle-Late Jurassic, and reached the overmature phase in late Late Jurassic. the hydrocarbon generation stage of the Permian source rocks occurred during Early-Middle Triassic and Jurassic. |
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| Keywords: | Thermal history Erosion thickness Hydrocarbon generation history Western Hubei-eastern Chongqing area |
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